EP2384401B1 - Broadband silencer - Google Patents
Broadband silencer Download PDFInfo
- Publication number
- EP2384401B1 EP2384401B1 EP10711931.5A EP10711931A EP2384401B1 EP 2384401 B1 EP2384401 B1 EP 2384401B1 EP 10711931 A EP10711931 A EP 10711931A EP 2384401 B1 EP2384401 B1 EP 2384401B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- chamber
- conduit
- conduit portion
- volume
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000003584 silencer Effects 0.000 title description 2
- 239000012530 fluid Substances 0.000 claims description 50
- 238000004891 communication Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000011144 upstream manufacturing Methods 0.000 claims 9
- 230000013011 mating Effects 0.000 description 11
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 102220092686 rs1662316 Human genes 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
- F04D29/665—Sound attenuation by means of resonance chambers or interference
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/1015—Air intakes; Induction systems characterised by the engine type
- F02M35/10157—Supercharged engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1211—Flow throttling or guiding by using inserts in the air intake flow path, e.g. baffles, throttles or orifices; Flow guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1216—Flow throttling or guiding by using a plurality of holes, slits, protrusions, perforations, ribs or the like; Surface structures; Turbulence generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1222—Flow throttling or guiding by using adjustable or movable elements, e.g. valves, membranes, bellows, expanding or shrinking elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1227—Flow throttling or guiding by using multiple air intake flow paths, e.g. bypass, honeycomb or pipes opening into an expansion chamber
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1233—Flow throttling or guiding by using expansion chambers in the air intake flow path
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1205—Flow throttling or guiding
- F02M35/1238—Flow throttling or guiding by using secondary connections to the ambient, e.g. covered by a membrane or a porous member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1244—Intake silencers ; Sound modulation, transmission or amplification using interference; Masking or reflecting sound
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
- F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
- F02M35/1266—Intake silencers ; Sound modulation, transmission or amplification using resonance comprising multiple chambers or compartments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the disclosure generally relates to noise suppression resonators.
- Supercharger and turbocharger compressors typically emit a distinctive noise, often referred to a whine, during operation, especially at high loadings. These high loadings are typically when the compressor is compressing air for an internal combustion engine at a compression ratio that is on the higher end of a compression ratio range. This noise may attain an undesirable level if uncorrected. Accordingly, a need exists for reducing the noise output of compressors.
- frequently Helmholtz resonators are used.
- US 2008/0173271 A1 discloses an adjustable Helmholtz resonator assembly having an active and an inactive state. In the active state, the Helmholtz resonator assembly is operated to attenuate pressure pulsation within air passing therethrough. The Helmholtz resonator is configured for use with an internal combustion engine.
- the present invention relates to noise suppression resonators so as to reduce the noise output of compressors.
- FIG. 1 illustrates a schematic representation of an engine and intake system to include an engine E, a compressor C, a noise resonator 20, and an air filter A.
- the engine is an internal combustion engine and the compressor is a portion of a supercharger.
- the resonator 20 generally operates to reduce the noise transmitted by the compressor that may resonate through the intake.
- the resonator 20 generally defines an axis A-A and includes an outer shell 22, an inlet 24 and an outlet 26.
- the noise resonator 20 is further illustrated in FIGS. 2-4 to include an inner member 30 having a conduit portion 32, a first annular wall 34, a second annular wall 36, and a generally annular mating end 38.
- the shell 22 is a generally cylindrical housing and includes a first end 40, a second end 42, a shell outside surface 44, and a shell inside surface 46.
- the conduit portion 32 includes a first conduit portion 50, a second conduit portion 52, an outside conduit surface 54, an inside conduit surface 56, a plurality of first conduit apertures 58, and a plurality of second conduit apertures 60.
- all of the apertures shown in the sectioned portion of the first conduit portion 50 are first conduit apertures 58
- all of the apertures shown in the sectioned portion of the second conduit portion 52 are second conduit apertures 60.
- the outlet 26 includes a generally annular inside surface 70 for sealing with the mating end 38.
- the first annular wall 34 includes a generally annular first surface 72, a generally annular second surface 74, and a generally cylindrical wall outer surface.
- the second annular wall 36 includes a generally annular surface 76.
- the shell inside surface 46, the outside conduit surface 54, the second surface 74 of the first annular wall 34 and the annular surface 76 of the second annular wall 36 define a first chamber 64.
- the shell inside surface 46, the outside conduit surface 54, the first surface 72 of the first annular wall 34 and the annular inside surface 70 of the outlet 26 define a second chamber 66.
- the distance between the second surface 74 of the first annular wall 34 and the annular surface 76 of the second annular wall 36 is a length L1.
- the distance between the first surface 72 of the first annular wall 34 and the annular surface 70 is a length L2.
- the first chamber 64 and the second chamber 66 have generally the same volume.
- the shell inside surface 46 and the outside conduit surface each have generally consistent diameters along the lengths L1 and L2.
- the length L1 is equal to the length L2. That is, the distance between the first annular wall 34 and the second annular wall 36 is equal to the distance between the first annular wall 34 and the outlet 26.
- each first conduit aperture 58 is generally cylindrical and defined by an axis F-F; while.each second conduit aperture 60 is generally cylindrical and defined by an axis G-G, although the first conduit apertures 58 and the second conduit apertures 60 need not be cylindrical.
- Each first conduit aperture 58 is generally the same diameter as each second conduit aperture 60. Additionally, the number of second conduit apertures 60 is greater than the number of the first conduit apertures 58.
- the resonator 20 has twenty-four (24) first conduit apertures 58 and thirty-four (34) second conduit apertures 60, where the first conduit apertures 58 are generally the same diameter as the second conduit apertures 60.
- the axes F-F and G-G intersect the axis A-A. As best seen in FIGS. 2-4 , the first conduit apertures 58 are generally evenly distributed within the first conduit portion 50, and the second conduit apertures 60 are generally evenly distributed within the second conduit portion 52.
- the inlet 24 is defined by a throat 80 for directing fluid flow from a first inlet end 82 to a second inlet end 84.
- the outlet 26 is defined by a throat 90 for directing fluid flow from a first outlet end 92 to a second outlet end 94.
- an exemplary first conduit aperture 58 generally defines a first diameter D1 and a thickness T1, which is generally the thickness of the first conduit portion 50 (distance between the outside conduit surface 54 and the inside conduit surface 56).
- an exemplary second conduit aperture 60 generally defines a second diameter D2 and a thickness T2, which is generally the thickness of the second conduit portion 52.
- the total area provided between the interior of the conduit portion 32 and the first chamber 64 is equal to the number of first conduit apertures 58 multiplied by the area of each first conduit aperture 58.
- the total area provided between the interior of the conduit portion 32 and the second chamber 66 is equal to the number of second conduit apertures 60 multiplied by the area of each second conduit aperture 60.
- the first chamber 64 When assembled as illustrated in FIG. 2 , the first chamber 64 is generally air tight with the exception of the first conduit apertures 58, and the second chamber 66 is generally air tight with the exception of the second conduit apertures 60. That is, air may enter and exit the first chamber 64 only through the first conduit apertures 58, and air may enter and exit the second chamber 66 only through the second conduit apertures 60.
- FIG. 5 illustrates another embodiment of a resonator as a resonator 220.
- the resonator 220 generally defines an axis B-B and has an outer shell 222, an inlet 224 and an outlet 226.
- the noise resonator 220 is further illustrated in FIGS. 6-8 to include a second inner member 230 having a conduit portion 232, a first inner member end 234, a second inner member end 236, and a mating flange 238.
- the shell 222 is a generally cylindrical housing and includes a first end 240, a second end 242, a shell outside surface 244, and a shell inside surface 246.
- the conduit portion 232 includes a first conduit portion 250, a second conduit portion 252, a third conduit portion 254, a fourth conduit portion 256, a fifth conduit portion 258, a sixth conduit portion 260, an outside conduit surface 264, an inside conduit surface 266, a plurality of first conduit apertures 268, a plurality of second conduit apertures 270, a plurality of third conduit apertures 272, a plurality of fourth conduit apertures 274, a plurality of fifth conduit apertures 276, a plurality of sixth conduit apertures 278, a generally annular first wall 280, a generally annular second wall 282, a generally annular third wall 284, a generally annular fourth wall 286, a generally annular fifth wall 288, a generally annular sixth wall 290, and a generally annular seventh wall 292.
- all of the apertures shown in the sectioned portion of the first conduit portion 250 are first conduit apertures 268, all of the apertures shown in the sectioned portion of the second conduit portion 252 are second conduit apertures 270, all of the apertures shown in the sectioned portion of the third conduit portion 254 are third conduit apertures 272, all of the apertures shown in the sectioned portion of the fourth conduit portion 256 are fourth conduit apertures 274, all of the apertures shown in the sectioned portion of the fifth conduit portion 258 are fifth conduit apertures 276, and all of the apertures shown in the sectioned portion of the sixth conduit portion 260 are sixth conduit apertures 278.
- the first wall 280 includes a generally annular first surface 302, a generally annular second surface 304, and a generally cylindrical wall outer surface 306.
- the second wall 282 includes a generally annular first surface 312, a generally annular second surface 314, and a generally cylindrical wall outer surface 316.
- the third wall 284 includes a generally annular first surface 322, a generally annular second surface 324, and a generally cylindrical wall outer surface 326.
- the fourth wall 286 includes a generally annular first surface 332, a generally annular second surface 334, and a generally cylindrical wall outer surface 336.
- the fifth wall 288 includes a generally annular first surface 342, a generally annular second surface 344, and a generally cylindrical wall outer surface 346.
- the sixth wall 290 includes a generally annular first surface 352, a generally annular second surface 354, and a generally cylindrical wall outer surface 356.
- the seventh wall 292 includes a generally annular first surface 362, a generally annular second surface 364, and a generally cylindrical wall outer surface 366.
- the shell inside surface 246, the outside conduit surface 264, the second surface 304 of the first wall 280 and the first surface 312 of the second wall 282 define a first chamber 370.
- the shell inside surface 246, the outside conduit surface 264, the second surface 314 of the second wall 282 and the first surface 322 of the third wall 284 define a second chamber 372.
- the shell inside surface 246, the outside conduit surface 264, the second surface 324 of the third wall 284 and the first surface 332 of the fourth wall 286 define a third chamber 374.
- the shell inside surface 246, the outside conduit surface 264, the second surface 334 of the fourth wall 286 and the first surface 342 of the fifth wall 288 define a fourth chamber 376.
- the shell inside surface 246, the outside conduit surface 264, the second surface 344 of the fifth wall 288 and the first surface 352 of the sixth wall 290 define a fifth chamber 378.
- the shell inside surface 246, the outside conduit surface 264, the second surface 354 of the sixth wall 290 and the first surface 362 of the seventh wall 292 define a sixth chamber 380.
- the distance between the second surface 304 of the first wall 280 and the first surface 312 of the second wall 282 is a length M1.
- the distance between the second surface 314 of the second wall 282 and the first surface 322 of the third wall 284 is a length M2.
- the distance between the second surface 324 of the third wall 284 and the first surface 332 of the fourth wall 286 is a length M3.
- the distance between the second surface 334 of the fourth wall 286 and the first surface 342 of the fifth wall 288 is a length M4.
- the distance between the second surface 344 of the fifth wall 288 and the first surface 352 of the sixth wall 290 is a length M5.
- the distance between the second surface 354 of the sixth wall 290 and the first surface 362 of the seventh wall 292 is a length M6.
- the first chamber 370, the second chamber 372, the third chamber 374, the fourth chamber 376, the fifth chamber 378, and the sixth chamber 380 have generally the same volume.
- the shell inside surface 246 and the outside conduit surface each have generally consistent diameters along the lengths M1, M2, M3, M4, M5, and M6. Also in the embodiment illustrated, the lengths M1, M12, M2, M3, M4, M5, and M6 are generally equal.
- each first conduit aperture 268 is generally cylindrical and defined by an axis F-F
- each second conduit aperture 270 is generally cylindrical and defined by an axis G-G
- each third conduit aperture 272 is generally cylindrical and defined by an axis H-H
- each fourth conduit aperture 274 is generally cylindrical and defined by an axis I-I
- each fifth conduit aperture 276 is generally cylindrical and defined by an axis J-J
- each sixth conduit aperture 278 is generally cylindrical and defined by an axis K-K (as best seen in FIGS. 8A - 8F ), although the conduit apertures need not be cylindrical.
- all conduit apertures are generally the same diameter, although desirable variations in geometry may be used.
- the number of sixth conduit apertures 278 is greater than the number of the fifth conduit apertures 276 which is greater than the number of the fourth conduit apertures 274 which is greater than the number of the third conduit apertures 272 which is greater than the number of the second conduit apertures 270 which is greater than the number of the first conduit apertures 268.
- the resonator 220 has twenty-two (22) first conduit apertures 268, twenty-eight (28) second conduit apertures 270, thirty-six (36) third conduit apertures 272, forty-two (42) fourth conduit apertures 274, sixty (60) fifth conduit apertures 276 and eighty-four (84) sixth conduit apertures 278.
- the axes F-F, G-G, H-H, I-I, J-J, and K-K intersect the axis A-A.
- the conduit apertures 268, 270, 272, 274, 276, and 278 are generally evenly distributed within their respective conduit portion.
- the inlet 224 is defined by a throat 390 for directing fluid flow from a first inlet end 392 to a second inlet end 394, and a flange 396 for coupling the inlet 224 to the shell 222.
- the mating flange 238 seals with the second inlet end 394.
- the outlet 226 is defined by a throat 400 for directing fluid flow from a first outlet end 402 to a second outlet end 404, and a flange 406 for coupling the outlet 226 to the shell 222.
- an exemplary first-conduit aperture 268 generally defines a first diameter D11 and a first thickness T11, which is generally the thickness of the first conduit portion 250.
- an exemplary second conduit aperture 270 generally defines a second diameter D12 and a second thickness T12, which is generally the thickness of the second conduit portion 252.
- FIG. 8C illustrates an exemplary third conduit aperture 272 generally defines a third diameter D13 and a third thickness T13, which is generally the thickness of the third conduit portion 254.
- FIG. 8D illustrates an exemplary fourth conduit aperture 274 generally defines a fourth diameter D14 and a fourth thickness T14, which is generally the thickness of the fourth conduit portion 256.
- FIG. 8E illustrates an exemplary fifth conduit aperture 276 generally defines a fifth diameter D15 and a fifth thickness T15, which is generally the thickness of the fifth conduit portion 258.
- FIG. 8F illustrates an exemplary sixth conduit aperture 278 generally defines a sixth diameter D16 and a sixth thickness T16, which is generally the thickness of the sixth conduit portion 260.
- the total area provided between the interior of the conduit portion 232 and the first chamber 370 is equal to the number of first conduit apertures 268 multiplied by the area of each first conduit aperture 268.
- the total area provided between the interior of the conduit portion 232 and the second chamber 372 is equal to the number of second conduit apertures 270 multiplied by the area of each second conduit aperture 270.
- the volume of air or other fluid within the conduit apertures 58, 60, 268, 270, 272, 274, 276, and 278 of a conduit portion is generally the volume defined by the diameter and thickness multiplied by the number of apertures.
- the first chamber 370 is generally air tight with the exception of the first conduit apertures 268, and the second chamber 372 is generally air tight with the exception of the second conduit apertures 270.
- the third chamber 374 is generally air tight with the exception of the third conduit apertures 272
- the fourth chamber 376 is generally air tight with the exception of the fourth conduit apertures 274
- the fifth chamber 378 is generally air tight with the exception of the fifth conduit apertures 276,
- the sixth chamber 380 is generally air tight with the exception of the sixth conduit apertures 278. That is, air may enter and exit the chambers 370, 372, 374, 376, 378, 380 only through their respective conduit apertures 268, and air may enter and exit the second chamber 372 only through the second conduit apertures 270.
- FIG. 9 illustrates another embodiment of a resonator as a resonator 420.
- the resonator 420 is generally defined by an axis C-C and includes an outer shell 422, the inlet 24 and the outlet 226.
- the noise resonator 420 is further illustrated in FIG. 10 to include the inner member 30 ( FIGS. 2-4 ) and the second inner member 230 ( FIGS. 6-8 ).
- the shell 422 is formed by interconnecting the second end 42 of the shell 22 with the first end 240 of the shell 222, although the shell 422 may be formed as one continuous piece.
- the inner member 30 and the second inner member 230 are interposed within the shell 422 and sealed therewith as described above. Further, the mating flange 238 seals with the mating end 38 to interconnect the inner member 30 and the second inner member 230.
- the volume of the chambers 64, 66 is about three times greater than the volume of the chambers 370, 372, 374, 376, 378, and 380, although other ratios may be utilized, as desired. Also as illustrated, the chambers are in series connection with the conduit.
- air will pass from the inlet to the outlet of a resonator.
- the air within a chamber 64, 66, 370, 372, 374, 376, 378, 380 will act as a spring while the mass of air within the apertures connecting the chamber to the conduit will resonate at a predetermined frequency. That is, the mass of the air within the apertures (volume multiplied by density) and the volume of air within the associated chamber will act as a mass and spring combination to resonate with desired frequencies and thus reduce the magnitude of these frequencies in the air that flows through the resonator.
- the inventors have determined that a combination of a plurality of first chambers with about the same volume having differing amounts of apertures connecting the first chambers with a conduit, and a plurality of second, chambers with about the same volume (but different from the volume of the first chambers) having differing amounts of apertures connecting the second chambers with the conduit will provide a resonator that may be easily manufactured while reducing a plurality of differing frequencies to reduce the noise output of an engine.
- the dimensions associated with the chamber 64, positioned near the inlet, are tuned to resonate with lower frequencies, and each successive chamber from the inlet to the outlet will resonate with successively higher frequencies since the lower frequencies are associated with greater energy, and the higher frequency chambers (such as chambers 376, 378) may reduce a greater amount of the tuned frequency in the absence of high amounts of resonate energy within the conduit adjacent the higher frequency chambers.
- the resonators may be manufactured of any suitable material, such as plastics, since the volumes, and not the stiffness, of the resonator is the primary factor in reducing noise.
- the chambers are formed as the conduit portions are interposed within the shells. Forming the illustrated components and apertures may be accomplished by any known methods.
- FIG.12 illustrates simulated results from testing of differing resonators.
- a prior art resonator modeled after the resonator of US Patent 5,979,598
- a resonator having the schematic dimensions of FIG. 11 As used herein, the transmission loss (TL) in Figure 12 for various frequencies is the difference in sound power between the the wave exiting the muffler into a tube that is anechoically terminated and the wave exiting a straight pipe section replacing the muffler and is anechoically terminated also.
- the prior are resonator exhibited a lower transmission loss for much of the frequency range than the resonator in Figure 11 , especially between 1800 and 2300 Hz.
- FIGS. 13 , 14 , and 15 illustrate another embodiment of a resonator as a resonator 620, which is an embodiment of the invention.
- the resonator 620 is generally defined by an axis D-D and includes an outer shell 622, the inlet 24 and the outlet 226.
- the noise resonator 620 is further illustrated in FIG. 13 to include the inner member 30 ( FIGS. 2-4 ), the second inner member 230 ( FIGS. 6-8 ), and a third inner member 630.
- the third inner member 630 is illustrated in FIG. 15 to include a conduit portion 632, a first inner member end 634, a second inner member end 636, and a mating flange 638.
- the mating flange 638 contacts the second inner member 230, while the second inner member end 636 contacts the outlet 226.
- the shell 622 is a generally cylindrical housing and includes a first end 640, a second end 642, a shell outside surface 644, and a shell inside surface 646.
- the conduit portion 632 which is the part of the conduit extending to the right of the items 292 and 680 in fig. 13 and which is further illustrated in fig.
- the conduit portion 632 also includes a generally radially extending first divider 688, a generally radially extending second divider 690, a generally radially extending third divider 692, a generally radially extending fourth divider 694, and a central divider 696.
- the dividers 688, 690, 692, 694, and 696 are omitted from FIG. 13 for clarity of illustration.
- all of the apertures in the first conduit portion 650 are first conduit apertures 668
- all of the apertures shown in the sectioned portion of the second conduit portion 652 are second conduit apertures 670
- all of the apertures shown in the sectioned portion of the third conduit portion 654 are third conduit apertures 672.
- the first wall 680 includes a generally annular first surface 702, a generally annular second surface 704, and a generally cylindrical wall outer surface 706.
- the second wall 682 includes a generally annular first surface 712, a generally annular second surface 714, and a generally cylindrical wall outer surface 716.
- the third wall 684 includes a generally annular first surface 722, a generally annular second surface 724, and a generally cylindrical wall outer surface 726.
- the fourth wall 686 includes a generally annular first surface 732, a generally annular second surface 734, and a generally cylindrical wall outer surface 736.
- the central divider 696 is illustrated in FIGS. 14 and 15 to include a generally radially extending first central divider portion 748, a generally radially extending second central divider portion 750, a generally radially extending third central divider portion 752, and a generally radially extending fourth central divider portion 754.
- Flow of a fluid through the resonator 620 is divided into a first path 756, a second path 758, a third path 760, and a forth path 762 by the central divider 696. That is, the dividers 688, 690, 692, 694, and 696 segregate the flow through the resonator 620 into four flow paths.
- the fluid that flows through the conduit portion 32 and the second conduit portion 232 is divided into the four flow paths 756, 758, 760, and 762.
- the dividers 688, 690, 692, 694, and 696 also segregate each of the chambers 770, 772, and 774 into distinct regions with no radial or circumferential fluid communication therebetween, as discussed in greater detail below.
- portions of the resonator 620 may be segregated into any suitable number of flow paths, as desired.
- the dividers 688, 690, 692, 694 may each include multiple portions, with a portion of each divider extending between two adjacent walls of the walls 680, 682, 684, 686.
- fluid will flow through the inlet 24 into the resonator 620 in an inlet flow path 764, flow through the conduit portion 32 and the second conduit portion 232, and then segregate into one of the flow paths 756, 758, 760, and 762.
- the fluid flowing through the flow paths 756, 758, 760, and 762 will merge into a singular flow path 766 within the outlet 226.
- the shell inside surface 646, the outside conduit surface 664, the second surface 704 of the first wall 680 and the first surface 712 of the second wall 682 define a first chamber 770.
- the shell inside surface 646, the outside conduit surface 664, the second surface 714 of the second wall 682 and the first surface 722 of the third wall 684 define a second chamber 772.
- the shell inside surface 646, the outside conduit surface 664, the second surface 724 of the third wall 684 and the first surface 732 of the fourth wall 686 define a third chamber 774.
- the first wall 680 may be deleted and the seventh wall 292 of the second conduit portion 232 may define the first chamber 770.
- the chamber 772 (second most downstream chamber in fig. 13 ) may represent the fourth chamber of claim 1 as it is divided in the circumferential direction.
- the chambers 64 and 66 defined by the first conduit portion 32, visible in fig. 13 represent the first and second chambers of claim 1 respectively as they have a larger volume than chamber 772.
- the third chamber of claim 1 may be represented by the chamber 770 as it has a flow area for fluid communication with the conduit that is smaller than the corresponding flow area of the chamber 772.
- the chamber 774 may represent the fifth chamber defined by claim 2. This choice of chambers supports claim 3.
- the distance between the second surface 704 of the first wall 680 and the first surface 712 of the second wall 682 is a length N1.
- the distance between the second surface 714 of the second wall 682 and the first surface 722 of the third wall 684 is a length N2.
- the distance between the second surface 724 of the third wall 684 and the first surface 732 of the fourth wall 686 is a length N3.
- the first chamber 770, the second chamber 772, and the third chamber 774 have generally the same volume.
- the shell inside surface 646 and the outside conduit surface each have generally consistent diameters along the lengths N1, N2, and N3. Also in the embodiment illustrated, the lengths N1, N2, and N3 are generally equal.
- each first conduit aperture 668 is generally cylindrical and defined by an axis R-R
- each second conduit aperture 670 is generally cylindrical and defined by an axis S-S
- each third conduit aperture 672 is generally cylindrical and defined by an axis T-T, (as best seen in FIGS. 13A - 13CF ), although the conduit apertures need not be cylindrical.
- all conduit apertures are generally the same diameter, although desirable variations in geometry may be used.
- the number of the third conduit apertures 672 is greater than the number of the second conduit apertures 670 which is greater than the number of the first conduit apertures 668.
- the resonator 620 has twenty-two (22) first conduit apertures 668, twenty-eight (28) second conduit apertures 670, thirty-six (36) third conduit apertures 672.
- the axes R-R, S-S, and T-T intersect the axis A-A.
- the conduit apertures 668, 670, 672 are generally evenly distributed within their respective conduit portion and between the dividers 688, 690, 692, 694, and 696.
- the inlet 24 is defined by a throat 790 for directing fluid flow from a first inlet end 792 to a second inlet end 794, and a flange 796 for coupling the inlet 24 to the shell 422.
- the mating flange 638 seals with the second inlet end 794.
- the outlet 226 is defined by a throat 400 for directing fluid flow from a first outlet end 402 to a second outlet end 404, and a flange 406 for coupling the outlet 226 to the shell 422.
- an exemplary first conduit aperture 668 generally defines a first diameter D21 and a first thickness T21, which is generally the thickness of the first conduit portion 650.
- an exemplary second conduit aperture 670 generally defines a second diameter D22 and a second thickness T22, which is generally the thickness of the second conduit portion 652.
- FIG. 13C illustrates an exemplary third conduit aperture 672 generally defines a third diameter D23 and a third thickness T23, which is generally the thickness of the third conduit portion 654.
- the total area provided between the interior of the conduit portion 632 and the first chamber 770 is equal to the number of first conduit apertures 668 multiplied by the area of each first conduit aperture 668.
- the total area provided between the interior of the conduit portion 632 and the second chamber 772 is equal to the number of second conduit apertures 670 multiplied by the area of each second conduit aperture 670.
- the volume of air or other fluid within the conduit apertures 58, 60, 268, 270, 272, 274, 276, 278, 668, 670, and 672 of a conduit portion is generally the volume defined by the diameter and thickness multiplied by the number of apertures.
- the first chamber 770 When assembled as illustrated in FIG. 13 , the first chamber 770 is generally air tight with the exception of the first conduit apertures 668, and the second chamber 772 is generally air tight with the exception of the second conduit apertures 670.
- the third chamber 774 is generally air tight with the exception of the third conduit apertures 672. That is, air may enter and exit the chamber 770 only through the first conduit apertures 668, and air may enter and exit the second chamber 772 only through the second conduit apertures 670.
- the shell 622 is formed by interconnecting the second end 62 of the shell 22 with the first end 240 of the shell 222, although the shell 622 may be formed as one continuous piece.
- the inner member 30 and the second inner member 230 are interposed within the shell 622 and sealed therewith as described above. Further, the mating flange 238 seals with the mating end 38 to interconnect the inner member 30 and the second inner member 230.
- the volume of the chambers 64, 66 is about three times greater than the volume of the chambers 370, 372, 374, 376, 378, and 380, although other ratios may be utilized, as desired, Also as illustrated, the chambers are in series connection with the conduit.
- air will pass from the inlet to the outlet of a resonator.
- the air within a chamber 64, 66, 370, 372, 374, 376, 378, 380 will act as a spring while the mass of air within the apertures connecting the chamber to the conduit will resonate at a predetermined frequency. That is, the mass of the air within the apertures (volume multiplied by density) and the volume of air within the associated chamber will act as a mass and spring combination to resonate with desired frequencies and thus reduce the magnitude of these frequencies in the air that flows through the resonator.
- the inventors have determined that a combination of a plurality of first chambers with about the same volume having differing amounts of apertures connecting the first chambers with a conduit, and a plurality of second chambers with about the same volume (but different from the volume of the first chambers) having differing amounts of apertures connecting the second chambers with the conduit will provide a resonator that may be easily manufactured while reducing a plurality of differing frequencies to reduce the noise output of an engine.
- the dimensions associated with the chamber 64, positioned near the inlet, are tuned to resonate with lower frequencies, and each successive chamber from the inlet to the outlet will resonate with successively higher frequencies since the lower frequencies are associated with greater energy, and the higher frequency chambers (such as chambers 376, 378) may reduce a greater amount of the tuned frequency in the absence of high amounts of resonate energy within the conduit adjacent the higher frequency chambers.
- the resonators may be manufactured of any suitable material, such as plastics, since the volumes, and not the stiffness, of the resonator is the primary factor in reducing noise.
- the portion including the inner member 30 may be referred to as a low frequency section
- the portion including the second inner member 230 may be referred to as a mid frequency section
- the portion including the third inner member 630 may be referred to as a high frequency section, as desired.
- the chambers are formed as the conduit portions are interposed within the shells. Forming the illustrated components and apertures may be accomplished by any known methods.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust Silencers (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- The disclosure generally relates to noise suppression resonators.
- Supercharger and turbocharger compressors typically emit a distinctive noise, often referred to a whine, during operation, especially at high loadings. These high loadings are typically when the compressor is compressing air for an internal combustion engine at a compression ratio that is on the higher end of a compression ratio range. This noise may attain an undesirable level if uncorrected. Accordingly, a need exists for reducing the noise output of compressors.
In the field of noise suppression, frequently Helmholtz resonators are used.US 2008/0173271 A1 for instance discloses an adjustable Helmholtz resonator assembly having an active and an inactive state. In the active state, the Helmholtz resonator assembly is operated to attenuate pressure pulsation within air passing therethrough. The Helmholtz resonator is configured for use with an internal combustion engine. -
DE 43 27 562 A1 discloses a silencer according to the preamble ofclaim 1. - The present invention relates to noise suppression resonators so as to reduce the noise output of compressors.
- In accordance with the present invention an apparatus as set forth in
claim 1 and a method as set forth in claim 9 is provided. Preferred embodiments of the invention are disclosed in the dependent claims. - Throughout the present specification, the use of the word "embodiment" in relation with some subject-matter does not imply that this subject-matter is part of the scope of protection of the patent. This scope of protection is defined by the claims and only by these. When an embodiment fits into the scope of protection of the patent, it will be referred to as "embodiment of the invention". Referring now to the drawings, illustrative embodiments are shown in detail. Although the drawings represent some embodiments, the drawings are not necessarily to scale and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain the embodiments. Further, the embodiments set forth herein are exemplary and are not intended to be exhaustive or otherwise limit or restrict the claims to the precise forms and configurations shown in the drawings and disclosed in the following detailed description.
-
FIG. 1 is a perspective view of a noise resonator, according to an embodiment. -
FIG. 2 is a sectional view of the resonator ofFIG. 1 . -
FIG. 2A is an enlarged view of portion 2A ofFIG. 2 . -
FIG. 2B is an enlarged view ofportion 2B ofFIG. 2 . -
FIG. 3 is perspective view of an inner portion of the resonator ofFIG. 1 . -
FIG. 4 is a side view of the inner portion ofFIG. 3 . -
FIG. 5 is a side view of a resonator, according to an embodiment. -
FIG. 6 is a perspective view of an inner portion of the resonator ofFIG. 5 . -
FIG. 7 is a side view of the inner portion ofFIG 6 . -
FIG. 8 is a partial sectional view of the inner portion ofFIG 6 . -
FIG. 8A is an enlarged view ofportion 8A ofFIG. 8 . -
FIG. 8B is.an enlarged view ofportion 8B ofFIG. 8 . -
FIG. 8C is an enlarged view ofportion 8C ofFIG. 8 . -
FIG. 8D is an enlarged view ofportion 8D ofFIG. 8 . -
FIG. 8E is an enlarged view ofportion 8E ofFIG. 8 . -
FIG. 8F is an enlarged view ofportion 8F ofFIG. 8 . -
FIG. 9 is a side view of a resonator, according to an embodiment. -
FIG. 10 is a partial sectional view of the resonator ofFIG. 9 . -
FIG. 11 is a schematic illustration of the sectional view of the resonator ofFIG. 10 . -
FIG. 12 is a graphical representation of a prediction of losses in each chamber of the resonator ofFIG. 9 . -
FIG. 13 is a side view of a resonator, according to an embodiment of the invention, with a baffle portion (divider) deleted for clarity. -
FIG. 13A is an enlarged view ofportion 13A ofFIG. 13 . -
FIG. 13B is an enlarged view ofportion 13B ofFIG. 13 . -
FIG. 13C is an enlarged view ofportion 13C ofFIG. 13 . -
FIG. 14 is a partial sectional view taken along line 14-14 ofFIG. 13 . -
FIG. 15 is a prespective view of a portion of the resonator ofFIG. 13 . -
FIG. 1 illustrates a schematic representation of an engine and intake system to include an engine E, a compressor C, anoise resonator 20, and an air filter A. In the embodiment illustrated, the engine is an internal combustion engine and the compressor is a portion of a supercharger. Theresonator 20 generally operates to reduce the noise transmitted by the compressor that may resonate through the intake. Theresonator 20 generally defines an axis A-A and includes anouter shell 22, aninlet 24 and anoutlet 26. Thenoise resonator 20 is further illustrated inFIGS. 2-4 to include aninner member 30 having aconduit portion 32, a firstannular wall 34, a secondannular wall 36, and a generallyannular mating end 38. - In the exemplary embodiment illustrated, the
shell 22 is a generally cylindrical housing and includes afirst end 40, asecond end 42, a shell outsidesurface 44, and a shell insidesurface 46. As best seen inFIG. 2 , theconduit portion 32 includes afirst conduit portion 50, asecond conduit portion 52, anoutside conduit surface 54, aninside conduit surface 56, a plurality offirst conduit apertures 58, and a plurality of second conduit apertures 60. In the illustration ofFIG. 2 , all of the apertures shown in the sectioned portion of thefirst conduit portion 50 arefirst conduit apertures 58, while all of the apertures shown in the sectioned portion of thesecond conduit portion 52 are second conduit apertures 60. - The
outlet 26 includes a generally annular insidesurface 70 for sealing with themating end 38. The firstannular wall 34 includes a generally annularfirst surface 72, a generally annularsecond surface 74, and a generally cylindrical wall outer surface. The secondannular wall 36 includes a generallyannular surface 76. The shell insidesurface 46, theoutside conduit surface 54, thesecond surface 74 of the firstannular wall 34 and theannular surface 76 of the secondannular wall 36 define afirst chamber 64. The shell insidesurface 46, theoutside conduit surface 54, thefirst surface 72 of the firstannular wall 34 and the annular insidesurface 70 of theoutlet 26 define asecond chamber 66. As illustrated, the distance between thesecond surface 74 of the firstannular wall 34 and theannular surface 76 of the secondannular wall 36 is a length L1. The distance between thefirst surface 72 of the firstannular wall 34 and theannular surface 70 is a length L2. - In the exemplary embodiment illustrated, the
first chamber 64 and thesecond chamber 66 have generally the same volume. In the embodiment illustrated, the shell insidesurface 46 and the outside conduit surface each have generally consistent diameters along the lengths L1 and L2. Also in the embodiment illustrated, the length L1 is equal to the length L2. That is, the distance between the firstannular wall 34 and the secondannular wall 36 is equal to the distance between the firstannular wall 34 and theoutlet 26. - In the exemplary embodiment illustrated, each
first conduit aperture 58 is generally cylindrical and defined by an axis F-F; while.eachsecond conduit aperture 60 is generally cylindrical and defined by an axis G-G, although thefirst conduit apertures 58 and thesecond conduit apertures 60 need not be cylindrical. Eachfirst conduit aperture 58 is generally the same diameter as eachsecond conduit aperture 60. Additionally, the number of second conduit apertures 60 is greater than the number of the first conduit apertures 58. In one embodiment, theresonator 20 has twenty-four (24)first conduit apertures 58 and thirty-four (34) second conduit apertures 60, where thefirst conduit apertures 58 are generally the same diameter as the second conduit apertures 60. Also in the embodiment illustrated, the axes F-F and G-G intersect the axis A-A. As best seen inFIGS. 2-4 , thefirst conduit apertures 58 are generally evenly distributed within thefirst conduit portion 50, and thesecond conduit apertures 60 are generally evenly distributed within thesecond conduit portion 52. - The
inlet 24 is defined by athroat 80 for directing fluid flow from afirst inlet end 82 to asecond inlet end 84. Theoutlet 26 is defined by athroat 90 for directing fluid flow from afirst outlet end 92 to asecond outlet end 94. - As best seen in
FIG. 2A , an exemplaryfirst conduit aperture 58 generally defines a first diameter D1 and a thickness T1, which is generally the thickness of the first conduit portion 50 (distance between theoutside conduit surface 54 and the inside conduit surface 56). Referring toFIG. 2B , an exemplarysecond conduit aperture 60 generally defines a second diameter D2 and a thickness T2, which is generally the thickness of thesecond conduit portion 52. The total area provided between the interior of theconduit portion 32 and thefirst chamber 64 is equal to the number offirst conduit apertures 58 multiplied by the area of eachfirst conduit aperture 58. Similarly, the total area provided between the interior of theconduit portion 32 and thesecond chamber 66 is equal to the number ofsecond conduit apertures 60 multiplied by the area of eachsecond conduit aperture 60. - When assembled as illustrated in
FIG. 2 , thefirst chamber 64 is generally air tight with the exception of thefirst conduit apertures 58, and thesecond chamber 66 is generally air tight with the exception of the second conduit apertures 60. That is, air may enter and exit thefirst chamber 64 only through thefirst conduit apertures 58, and air may enter and exit thesecond chamber 66 only through the second conduit apertures 60. -
FIG. 5 illustrates another embodiment of a resonator as aresonator 220. Theresonator 220 generally defines an axis B-B and has anouter shell 222, aninlet 224 and anoutlet 226. Thenoise resonator 220 is further illustrated inFIGS. 6-8 to include a secondinner member 230 having aconduit portion 232, a first inner member end 234, a secondinner member end 236, and amating flange 238. - In the exemplary embodiment illustrated, the
shell 222 is a generally cylindrical housing and includes afirst end 240, asecond end 242, a shell outsidesurface 244, and a shell insidesurface 246. As best seen inFIGS. 6-8 , theconduit portion 232 includes afirst conduit portion 250, asecond conduit portion 252, athird conduit portion 254, afourth conduit portion 256, afifth conduit portion 258, asixth conduit portion 260, anoutside conduit surface 264, aninside conduit surface 266, a plurality offirst conduit apertures 268, a plurality ofsecond conduit apertures 270, a plurality ofthird conduit apertures 272, a plurality offourth conduit apertures 274, a plurality offifth conduit apertures 276, a plurality ofsixth conduit apertures 278, a generally annularfirst wall 280, a generally annularsecond wall 282, a generally annularthird wall 284, a generally annularfourth wall 286, a generally annularfifth wall 288, a generally annularsixth wall 290, and a generally annularseventh wall 292. - In the illustration of
FIG. 8 , all of the apertures shown in the sectioned portion of thefirst conduit portion 250 arefirst conduit apertures 268, all of the apertures shown in the sectioned portion of thesecond conduit portion 252 aresecond conduit apertures 270, all of the apertures shown in the sectioned portion of thethird conduit portion 254 arethird conduit apertures 272, all of the apertures shown in the sectioned portion of thefourth conduit portion 256 arefourth conduit apertures 274, all of the apertures shown in the sectioned portion of thefifth conduit portion 258 arefifth conduit apertures 276, and all of the apertures shown in the sectioned portion of thesixth conduit portion 260 are sixth conduit apertures 278. - The
first wall 280 includes a generally annularfirst surface 302, a generally annularsecond surface 304, and a generally cylindrical wallouter surface 306. Thesecond wall 282 includes a generally annularfirst surface 312, a generally annularsecond surface 314, and a generally cylindrical wallouter surface 316. Thethird wall 284 includes a generally annularfirst surface 322, a generally annularsecond surface 324, and a generally cylindrical wallouter surface 326. Thefourth wall 286 includes a generally annularfirst surface 332, a generally annularsecond surface 334, and a generally cylindrical wallouter surface 336. Thefifth wall 288 includes a generally annularfirst surface 342, a generally annularsecond surface 344, and a generally cylindrical wallouter surface 346. Thesixth wall 290 includes a generally annularfirst surface 352, a generally annularsecond surface 354, and a generally cylindrical wallouter surface 356. Theseventh wall 292 includes a generally annularfirst surface 362, a generally annularsecond surface 364, and a generally cylindrical wallouter surface 366. - The shell inside
surface 246, theoutside conduit surface 264, thesecond surface 304 of thefirst wall 280 and thefirst surface 312 of thesecond wall 282 define afirst chamber 370. The shell insidesurface 246, theoutside conduit surface 264, thesecond surface 314 of thesecond wall 282 and thefirst surface 322 of thethird wall 284 define asecond chamber 372. The shell insidesurface 246, theoutside conduit surface 264, thesecond surface 324 of thethird wall 284 and thefirst surface 332 of thefourth wall 286 define athird chamber 374. The shell insidesurface 246, theoutside conduit surface 264, thesecond surface 334 of thefourth wall 286 and thefirst surface 342 of thefifth wall 288 define afourth chamber 376. The shell insidesurface 246, theoutside conduit surface 264, thesecond surface 344 of thefifth wall 288 and thefirst surface 352 of thesixth wall 290 define afifth chamber 378. The shell insidesurface 246, theoutside conduit surface 264, thesecond surface 354 of thesixth wall 290 and thefirst surface 362 of theseventh wall 292 define asixth chamber 380. - As best illustrated in
FIG. 8 , the distance between thesecond surface 304 of thefirst wall 280 and thefirst surface 312 of thesecond wall 282 is a length M1. The distance between thesecond surface 314 of thesecond wall 282 and thefirst surface 322 of thethird wall 284 is a length M2. The distance between thesecond surface 324 of thethird wall 284 and thefirst surface 332 of thefourth wall 286 is a length M3. The distance between thesecond surface 334 of thefourth wall 286 and thefirst surface 342 of thefifth wall 288 is a length M4. The distance between thesecond surface 344 of thefifth wall 288 and thefirst surface 352 of thesixth wall 290 is a length M5. The distance between thesecond surface 354 of thesixth wall 290 and thefirst surface 362 of theseventh wall 292 is a length M6. - In the exemplary embodiment illustrated, the
first chamber 370, thesecond chamber 372, thethird chamber 374, thefourth chamber 376, thefifth chamber 378, and thesixth chamber 380 have generally the same volume. In the embodiment illustrated, the shell insidesurface 246 and the outside conduit surface each have generally consistent diameters along the lengths M1, M2, M3, M4, M5, and M6. Also in the embodiment illustrated, the lengths M1, M12, M2, M3, M4, M5, and M6 are generally equal. - In the exemplary embodiment illustrated, each
first conduit aperture 268 is generally cylindrical and defined by an axis F-F, while eachsecond conduit aperture 270 is generally cylindrical and defined by an axis G-G, eachthird conduit aperture 272 is generally cylindrical and defined by an axis H-H, while eachfourth conduit aperture 274 is generally cylindrical and defined by an axis I-I, eachfifth conduit aperture 276 is generally cylindrical and defined by an axis J-J, while eachsixth conduit aperture 278 is generally cylindrical and defined by an axis K-K (as best seen inFIGS. 8A - 8F ), although the conduit apertures need not be cylindrical. Also in the embodiment illustrated, all conduit apertures are generally the same diameter, although desirable variations in geometry may be used. - The number of
sixth conduit apertures 278 is greater than the number of thefifth conduit apertures 276 which is greater than the number of thefourth conduit apertures 274 which is greater than the number of thethird conduit apertures 272 which is greater than the number of thesecond conduit apertures 270 which is greater than the number of the first conduit apertures 268. In one embodiment, theresonator 220 has twenty-two (22)first conduit apertures 268, twenty-eight (28)second conduit apertures 270, thirty-six (36)third conduit apertures 272, forty-two (42)fourth conduit apertures 274, sixty (60)fifth conduit apertures 276 and eighty-four (84) sixth conduit apertures 278. Also in the embodiment illustrated, the axes F-F, G-G, H-H, I-I, J-J, and K-K intersect the axis A-A. As best seen inFIGS. 6-8 , theconduit apertures - The
inlet 224 is defined by athroat 390 for directing fluid flow from afirst inlet end 392 to asecond inlet end 394, and aflange 396 for coupling theinlet 224 to theshell 222. Themating flange 238 seals with thesecond inlet end 394. Theoutlet 226 is defined by athroat 400 for directing fluid flow from afirst outlet end 402 to asecond outlet end 404, and aflange 406 for coupling theoutlet 226 to theshell 222. - As best seen in
FIG. 8A , an exemplary first-conduit aperture 268 generally defines a first diameter D11 and a first thickness T11, which is generally the thickness of thefirst conduit portion 250. Referring toFIG. 8B , an exemplarysecond conduit aperture 270 generally defines a second diameter D12 and a second thickness T12, which is generally the thickness of thesecond conduit portion 252.FIG. 8C illustrates an exemplarythird conduit aperture 272 generally defines a third diameter D13 and a third thickness T13, which is generally the thickness of thethird conduit portion 254.FIG. 8D illustrates an exemplaryfourth conduit aperture 274 generally defines a fourth diameter D14 and a fourth thickness T14, which is generally the thickness of thefourth conduit portion 256.FIG. 8E illustrates an exemplaryfifth conduit aperture 276 generally defines a fifth diameter D15 and a fifth thickness T15, which is generally the thickness of thefifth conduit portion 258.FIG. 8F illustrates an exemplarysixth conduit aperture 278 generally defines a sixth diameter D16 and a sixth thickness T16, which is generally the thickness of thesixth conduit portion 260. - The total area provided between the interior of the
conduit portion 232 and thefirst chamber 370 is equal to the number offirst conduit apertures 268 multiplied by the area of eachfirst conduit aperture 268. Similarly, the total area provided between the interior of theconduit portion 232 and thesecond chamber 372 is equal to the number ofsecond conduit apertures 270 multiplied by the area of eachsecond conduit aperture 270. - The volume of air or other fluid within the conduit apertures 58, 60, 268, 270, 272, 274, 276, and 278 of a conduit portion is generally the volume defined by the diameter and thickness multiplied by the number of apertures. As an example, the volume of air within the third conduit apertures 272 (V13,
FIG. 8C ) is: - V13 = the combined volume of air within the
third conduit apertures 272 - T13 is the thickness of the
third conduit apertures 272 - D13 is the diameter of the
third conduit apertures 272 - π is pi, and
- 36 is the number of third conduit apertures 272.
- When assembled as illustrated in
FIG. 8 , thefirst chamber 370 is generally air tight with the exception of thefirst conduit apertures 268, and thesecond chamber 372 is generally air tight with the exception of the second conduit apertures 270. Thethird chamber 374 is generally air tight with the exception of thethird conduit apertures 272, thefourth chamber 376 is generally air tight with the exception of thefourth conduit apertures 274, thefifth chamber 378 is generally air tight with the exception of thefifth conduit apertures 276, and thesixth chamber 380 is generally air tight with the exception of the sixth conduit apertures 278. That is, air may enter and exit thechambers respective conduit apertures 268, and air may enter and exit thesecond chamber 372 only through the second conduit apertures 270. -
FIG. 9 illustrates another embodiment of a resonator as aresonator 420. Theresonator 420 is generally defined by an axis C-C and includes an outer shell 422, theinlet 24 and theoutlet 226. Thenoise resonator 420 is further illustrated inFIG. 10 to include the inner member 30 (FIGS. 2-4 ) and the second inner member 230 (FIGS. 6-8 ). - In one exemplary embodiment illustrated, the shell 422 is formed by interconnecting the
second end 42 of theshell 22 with thefirst end 240 of theshell 222, although the shell 422 may be formed as one continuous piece. As best seen inFIG. 10 , theinner member 30 and the secondinner member 230 are interposed within the shell 422 and sealed therewith as described above. Further, themating flange 238 seals with themating end 38 to interconnect theinner member 30 and the secondinner member 230. - In the exemplary embodiment, the volume of the
chambers chambers - In one exemplary embodiment of operation, air will pass from the inlet to the outlet of a resonator. Generally, the air within a
chamber - Generally, the dimensions associated with the
chamber 64, positioned near the inlet, are tuned to resonate with lower frequencies, and each successive chamber from the inlet to the outlet will resonate with successively higher frequencies since the lower frequencies are associated with greater energy, and the higher frequency chambers (such aschambers 376, 378) may reduce a greater amount of the tuned frequency in the absence of high amounts of resonate energy within the conduit adjacent the higher frequency chambers. The resonators may be manufactured of any suitable material, such as plastics, since the volumes, and not the stiffness, of the resonator is the primary factor in reducing noise. - Generally, the chambers are formed as the conduit portions are interposed within the shells. Forming the illustrated components and apertures may be accomplished by any known methods.
-
FIG.12 illustrates simulated results from testing of differing resonators. InFIG. 12 , a prior art resonator (modeled after the resonator ofUS Patent 5,979,598 ) is compared to a resonator having the schematic dimensions ofFIG. 11 . As used herein, the transmission loss (TL) inFigure 12 for various frequencies is the difference in sound power between the the wave exiting the muffler into a tube that is anechoically terminated and the wave exiting a straight pipe section replacing the muffler and is anechoically terminated also. As illustrated the prior are resonator exhibited a lower transmission loss for much of the frequency range than the resonator inFigure 11 , especially between 1800 and 2300 Hz. -
FIGS. 13 ,14 , and15 illustrate another embodiment of a resonator as aresonator 620, which is an embodiment of the invention. Theresonator 620 is generally defined by an axis D-D and includes anouter shell 622, theinlet 24 and theoutlet 226. Thenoise resonator 620 is further illustrated inFIG. 13 to include the inner member 30 (FIGS. 2-4 ), the second inner member 230 (FIGS. 6-8 ), and a thirdinner member 630. - The third
inner member 630 is illustrated inFIG. 15 to include aconduit portion 632, a firstinner member end 634, a secondinner member end 636, and amating flange 638. Themating flange 638 contacts the secondinner member 230, while the second inner member end 636 contacts theoutlet 226. - In this embodiment of the invention, the
shell 622 is a generally cylindrical housing and includes afirst end 640, asecond end 642, a shell outsidesurface 644, and a shell insidesurface 646. Theconduit portion 632, which is the part of the conduit extending to the right of theitems fig. 13 and which is further illustrated infig. 14 and15 , includes afirst conduit portion 650, asecond conduit portion 652, athird conduit portion 654, anoutside conduit surface 664, aninside conduit surface 666, a plurality offirst conduit apertures 668, a plurality ofsecond conduit apertures 670, a plurality ofthird conduit apertures 672, a generally annularfirst wall 680, a generally annularsecond wall 682, and a generally annularthird wall 684. Referring toFIGS. 14 and15 , theconduit portion 632 also includes a generally radially extendingfirst divider 688, a generally radially extendingsecond divider 690, a generally radially extendingthird divider 692, a generally radially extendingfourth divider 694, and acentral divider 696. Thedividers FIG. 13 for clarity of illustration. - As best seen in
FIGS 13 and15 , all of the apertures in thefirst conduit portion 650 arefirst conduit apertures 668, all of the apertures shown in the sectioned portion of thesecond conduit portion 652 aresecond conduit apertures 670, and all of the apertures shown in the sectioned portion of thethird conduit portion 654 are third conduit apertures 672. - The
first wall 680 includes a generally annular first surface 702, a generally annular second surface 704, and a generally cylindrical wall outer surface 706. Thesecond wall 682 includes a generally annular first surface 712, a generally annular second surface 714, and a generally cylindrical wall outer surface 716. Thethird wall 684 includes a generally annular first surface 722, a generally annular second surface 724, and a generally cylindrical wall outer surface 726. Thefourth wall 686 includes a generally annular first surface 732, a generally annular second surface 734, and a generally cylindrical wall outer surface 736. - The
central divider 696 is illustrated inFIGS. 14 and15 to include a generally radially extending firstcentral divider portion 748, a generally radially extending secondcentral divider portion 750, a generally radially extending thirdcentral divider portion 752, and a generally radially extending fourthcentral divider portion 754. Flow of a fluid through theresonator 620 is divided into afirst path 756, asecond path 758, athird path 760, and aforth path 762 by thecentral divider 696. That is, thedividers resonator 620 into four flow paths. Specifically, the fluid that flows through theconduit portion 32 and thesecond conduit portion 232 is divided into the fourflow paths dividers - While four
flow paths resonator 620 may be segregated into any suitable number of flow paths, as desired. Further, thedividers walls FIG. 13 , during operation, fluid will flow through theinlet 24 into theresonator 620 in aninlet flow path 764, flow through theconduit portion 32 and thesecond conduit portion 232, and then segregate into one of theflow paths flow paths singular flow path 766 within theoutlet 226. - The shell inside
surface 646, theoutside conduit surface 664, the second surface 704 of thefirst wall 680 and the first surface 712 of thesecond wall 682 define a first chamber 770. The shell insidesurface 646, theoutside conduit surface 664, the second surface 714 of thesecond wall 682 and the first surface 722 of thethird wall 684 define a second chamber 772. The shell insidesurface 646, theoutside conduit surface 664, the second surface 724 of thethird wall 684 and the first surface 732 of thefourth wall 686 define a third chamber 774. In one embodiment, thefirst wall 680 may be deleted and theseventh wall 292 of thesecond conduit portion 232 may define the first chamber 770. - The chamber 772 (second most downstream chamber in
fig. 13 ) may represent the fourth chamber ofclaim 1 as it is divided in the circumferential direction. Thechambers first conduit portion 32, visible infig. 13 , represent the first and second chambers ofclaim 1 respectively as they have a larger volume than chamber 772. The third chamber ofclaim 1 may be represented by the chamber 770 as it has a flow area for fluid communication with the conduit that is smaller than the corresponding flow area of the chamber 772. The chamber 774 may represent the fifth chamber defined byclaim 2. This choice of chambers supportsclaim 3. - As best illustrated in
FIG. 13 , the distance between the second surface 704 of thefirst wall 680 and the first surface 712 of thesecond wall 682 is a length N1. The distance between the second surface 714 of thesecond wall 682 and the first surface 722 of thethird wall 684 is a length N2. The distance between the second surface 724 of thethird wall 684 and the first surface 732 of thefourth wall 686 is a length N3. - In this embodiment of the invention, the first chamber 770, the second chamber 772, and the third chamber 774 have generally the same volume. In the embodiment illustrated, the shell inside
surface 646 and the outside conduit surface each have generally consistent diameters along the lengths N1, N2, and N3. Also in the embodiment illustrated, the lengths N1, N2, and N3 are generally equal. - In this embodiment of the invention, each
first conduit aperture 668 is generally cylindrical and defined by an axis R-R, while eachsecond conduit aperture 670 is generally cylindrical and defined by an axis S-S, eachthird conduit aperture 672 is generally cylindrical and defined by an axis T-T, (as best seen inFIGS. 13A - 13CF ), although the conduit apertures need not be cylindrical. Also in this embodiment of the invention, all conduit apertures are generally the same diameter, although desirable variations in geometry may be used. - The number of the
third conduit apertures 672 is greater than the number of thesecond conduit apertures 670 which is greater than the number of the first conduit apertures 668. In one embodiment, theresonator 620 has twenty-two (22)first conduit apertures 668, twenty-eight (28)second conduit apertures 670, thirty-six (36) third conduit apertures 672. Also in this embodiment of the invention, the axes R-R, S-S, and T-T intersect the axis A-A. As best seen inFIGS. 13 and15 , theconduit apertures dividers - The
inlet 24 is defined by a throat 790 for directing fluid flow from a first inlet end 792 to a second inlet end 794, and a flange 796 for coupling theinlet 24 to the shell 422. Themating flange 638 seals with the second inlet end 794. As described above, theoutlet 226 is defined by athroat 400 for directing fluid flow from afirst outlet end 402 to asecond outlet end 404, and aflange 406 for coupling theoutlet 226 to the shell 422. - As best seen in
FIG, 13A , an exemplaryfirst conduit aperture 668 generally defines a first diameter D21 and a first thickness T21, which is generally the thickness of thefirst conduit portion 650. Referring toFIG. 13B , an exemplarysecond conduit aperture 670 generally defines a second diameter D22 and a second thickness T22, which is generally the thickness of thesecond conduit portion 652.FIG. 13C illustrates an exemplarythird conduit aperture 672 generally defines a third diameter D23 and a third thickness T23, which is generally the thickness of thethird conduit portion 654. - The total area provided between the interior of the
conduit portion 632 and the first chamber 770 is equal to the number offirst conduit apertures 668 multiplied by the area of eachfirst conduit aperture 668. Similarly, the total area provided between the interior of theconduit portion 632 and the second chamber 772 is equal to the number ofsecond conduit apertures 670 multiplied by the area of eachsecond conduit aperture 670. - The volume of air or other fluid within the conduit apertures 58, 60, 268, 270, 272, 274, 276, 278, 668, 670, and 672 of a conduit portion is generally the volume defined by the diameter and thickness multiplied by the number of apertures. As an example, the volume of air within the second conduit apertures 670 (V22,
FIG. 13B ) is: - V22= the combined volume of air within the
second conduit apertures 670 - T22 is the thickness of the
second conduit apertures 670 - D22 is the diameter of the
second conduit apertures 670 - π is pi, and
- 36 is the number of second conduit apertures 670.
- When assembled as illustrated in
FIG. 13 , the first chamber 770 is generally air tight with the exception of thefirst conduit apertures 668, and the second chamber 772 is generally air tight with the exception of the second conduit apertures 670. The third chamber 774 is generally air tight with the exception of the third conduit apertures 672. That is, air may enter and exit the chamber 770 only through thefirst conduit apertures 668, and air may enter and exit the second chamber 772 only through the second conduit apertures 670. - In this embodiment of the invention, the
shell 622 is formed by interconnecting the second end 62 of theshell 22 with thefirst end 240 of theshell 222, although theshell 622 may be formed as one continuous piece. As best seen infig. 13 and in analogy withfig. 10 , theinner member 30 and the secondinner member 230 are interposed within theshell 622 and sealed therewith as described above. Further, themating flange 238 seals with themating end 38 to interconnect theinner member 30 and the secondinner member 230. - In this embodiment of the invention, the volume of the
chambers chambers - In one exemplary embodiment of operation, air will pass from the inlet to the outlet of a resonator. Generally, the air within a
chamber - Generally, the dimensions associated with the
chamber 64, positioned near the inlet, are tuned to resonate with lower frequencies, and each successive chamber from the inlet to the outlet will resonate with successively higher frequencies since the lower frequencies are associated with greater energy, and the higher frequency chambers (such aschambers 376, 378) may reduce a greater amount of the tuned frequency in the absence of high amounts of resonate energy within the conduit adjacent the higher frequency chambers. The resonators may be manufactured of any suitable material, such as plastics, since the volumes, and not the stiffness, of the resonator is the primary factor in reducing noise. Referring to theresonator 620, the portion including theinner member 30 may be referred to as a low frequency section, the portion including the secondinner member 230 may be referred to as a mid frequency section, the portion including the thirdinner member 630 may be referred to as a high frequency section, as desired. - Generally, the chambers are formed as the conduit portions are interposed within the shells. Forming the illustrated components and apertures may be accomplished by any known methods.
- The preceding description has been presented only to illustrate and describe exemplary embodiments of resonators and one embodiment of the present invention. It is not intended to be exhaustive or to limit the invention to any precise form disclosed. It will be understood by those skilled in the art that various changes may be made without departing from the scope of the invention, which is defined solely by the following claims.
Claims (12)
- An apparatus comprising:- a conduit portion (32, 232, 632) having a conduit inner surface (56) and a conduit outer surface (54);- a plurality of chambers (64, 66, 370-380, 770-774) in fluid communication with the conduit portion (32, 232, 632) including:the apparatus being characterized(a) a first chamber (64) defined, at least in part, by a first outer housing (22) and a first chamber (64) volume, wherein the first chamber (64) is in fluid communication with the conduit portion (32, 232, 632), and wherein a fluid is permitted to flow between the conduit portion (32, 232, 632) and the first chamber (64) through a first flow area;(b) a second chamber (66) defined, at least in part, by a second outer housing (22) and a second chamber (66) volume, wherein the second chamber (66) is in fluid communication with the conduit portion (32, 232, 632), and wherein a fluid is permitted to flow between the conduit portion (32, 232, 632) and the second chamber (66) through a second flow area, wherein the first chamber (64) volume is generally equal to the second chamber (66) volume and the first flow area is smaller than the second flow area; and(c) a third chamber (770) defined, at least in part, by a third outer housing (622) and a third chamber (770) volume, wherein the third chamber (770) is in fluid communication with the conduit portion (32, 232, 632), and wherein a fluid is permitted to flow between the conduit portion (32, 232, 632) and the third chamber (770) through a third flow area, wherein the first chamber (64) volume is greater than the third chamber (770) volume;(d) a fourth chamber (772) defined, at least in part, by a fourth outer housing (622) and a fourth chamber (772) volume, wherein the fourth chamber (772) is in fluid communication with the conduit portion (32, 232, 632), and wherein a fluid is permitted to flow between the conduit portion (32, 232, 632) and the fourth chamber (772) through a fourth flow area, wherein the third chamber (770) volume is generally equal to the fourth chamber (772) volume and the third flow area is smaller than the fourth flow area;- in that it further comprises a divider (748+688, 750+690, 752+692, 754+694) including:(e) a chamber divider portion (688, 690, 692, 694) interposed at least partially within the fourth chamber (772) such that at least a portion of the fourth chamber (772) is divided into a plurality of fourth chamber (772) sections (800, 802, 804, 808);(f) a central divider portion (748, 750, 752, 754) dividing the conduit flow path into a plurality of segregated conduit flow path portions (756, 758, 760, 762),- and in that the chamber divider portion (688, 690, 692, 694) is aligned with the central divider portion (748, 750, 752, 754) such that each of the fourth chamber sections is in fluid communication with one of the conduit flow path portions only.
- The apparatus of claim1, further comprising a fifth chamber (774) defined, at least in part, by a fifth outer housing (622) and a fifth chamber (774) volume, wherein the fifth chamber (774) is in fluid communication with the conduit portion (32, 232, 632), and wherein a fluid is permitted to flow between the conduit portion (32, 232, 632) and the fifth chamber (774) through a fifth flow area.
- The apparatus of claim 2, wherein the first chamber (64) is upstream of the second chamber (66), the second chamber (66) is upstream of the third chamber (770), the third chamber (770) is upstream of the fourth chamber (772), the fourth chamber (772) is upstream of the fifth chamber (774) and wherein the plurality of chambers (64, 66, 770, 772, 774) are arranged in series and in fluid communication only with the conduit portion (32, 232, 632).
- The apparatus of claim 1, wherein the first flow area is defined by the combined sectional area of at least 20 apertures (58) to provide fluid communication with the first chamber (64), wherein the sectional area is measured generally perpendicular to the flow of fluid through the apertures.
- The apparatus of claim 4, wherein each aperture (58) has about the same sectional area, and/or wherein preferably the conduit portion (32) has at least 30 apertures (58) to provide fluid communication with the first chamber (64).
- The apparatus of claim 1, wherein each of the plurality of chambers (64, 66, 770, 772) is in fluid communication with only the conduit portion (32, 232, 632), and wherein preferably the plurality of chambers (64, 66, 770, 772) are arranged in series.
- The apparatus of claim 1, wherein the first chamber (64) is in fluid communication with the conduit portion (32) via a plurality of first apertures (58) defining a first sectional area, the second chamber (66) is in fluid communication with the conduit portion (32, 232, 632) via a plurality of second apertures (60) defining a second sectional area, and wherein the first sectional area is smaller than the second sectional area.
- The apparatus of claim 1, wherein the conduit (32, 232, 632) selectively permits a fluid to enter a compressor portion (C) and an internal combustion engine (E).
- A method reducing acoustic energy in an engine intake, comprising:(a) forming a first chamber (64) defined, at least in part, by a first outer housing (22) and a first chamber volume, wherein the first chamber (64) is in fluid communication with a conduit portion (32, 232, 632), and permitting a fluid to flow between the conduit portion (32, 232, 632) and the first chamber (64) through a first flow area;(b) forming a second chamber (66) defined, at least in part, by a second outer housing (22) and a second chamber volume, wherein the second chamber (66) is in fluid communication with the conduit portion (32, 232, 632), and permitting a fluid to flow between the conduit portion (32) and the second chamber (66) through a second flow area; wherein the first chamber volume is generally equal to the second chamber volume and the first flow area is smaller than the second flow area; and(c) forming a third chamber (770) defined, at least in part, by a third outer housing (622) and a third chamber volume, wherein the third chamber (770) is in fluid communication with the conduit portion (32, 232, 632), and permitting a fluid to flow between the conduit portion (32) and the third chamber (770) through a third flow area, wherein the first chamber volume is greater than the third chamber volume;(d) forming a fourth chamber (772) defined, at least in part, by a fourth outer housing (622) and a fourth chamber volume, wherein the fourth chamber (772) is in fluid communication with the conduit portion (32, 232, 632), and permitting a fluid to flow between the conduit portion (32, 232, 632) and the fourth chamber (772) through a fourth flow area, wherein the third chamber volume is generally equal to the fourth chamber volume and the third flow area is smaller than the fourth flow area; the method being characterized in that it further comprises(e) dividing the fourth chamber (772) into a plurality of chamber sections (800, 802, 804, 808) using a chamber divider portion (688, 690, 692, 694) interposed at least partially within the fourth chamber (772);(f) dividing the conduit flow path into a plurality of segregated conduit flow paths portions (756, 758, 760, 762) using a central divider portion (748, 750, 752, 754); and(g) aligning the chamber divider portion (688, 690, 692, 694) with the central divider portion (748, 750, 752, 754) such that each of the fourth chamber sections is in fluid communication with one of the conduit flow path portions only.
- The method of claim 9, further comprising directing a fluid to a compressor (C) and an internal combustion engine (E) through the conduit portion (32, 232, 632).
- The method of claim 9, further comprising forming a fifth chamber (774) defined, at least in part, by a fifth outer housing (622) and a fifth chamber volume, wherein the fifth chamber (774) is in fluid communication with the conduit portion (32, 232, 632), and permitting a fluid to flow between the conduit portion (32, 232, 632) and the fifth chamber (774) through a fifth flow area, and further preferably comprising placing the first chamber (64) upstream of the second chamber (66), placing the second chamber (66) upstream of the third chamber (770), placing the third chamber (770) upstream of the fourth chamber (772), placing the fourth chamber (772) upstream of the fifth chamber (774) and arranging the plurality of chambers (64, 66, 770, 772, 774) in series and in fluid communication only with the conduit portion (32, 232, 632).
- The method of claim 9, further comprising arranging the plurality of chambers (64, 66, 770, 772) in series and in fluid communication only with the conduit portion (32, 232, 632), and/or further preferably comprising placing the first chamber (64) in fluid communication with the conduit portion (32, 232, 632) via a plurality of first apertures (58) defining a first sectional area, placing the second chamber (66) in fluid communication with the conduit portion (32, 232, 632) via a plurality of second apertures (60) defining a second sectional area, and setting the first sectional area smaller than the second sectional area, and/or further preferably comprising placing the first chamber (64) upstream of the third chamber (770).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/363,088 US7934581B2 (en) | 2009-01-30 | 2009-01-30 | Broadband noise resonator |
PCT/IB2010/000162 WO2010086719A1 (en) | 2009-01-30 | 2010-01-29 | Broadband noise resonator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2384401A1 EP2384401A1 (en) | 2011-11-09 |
EP2384401B1 true EP2384401B1 (en) | 2019-05-15 |
Family
ID=42124592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10711931.5A Active EP2384401B1 (en) | 2009-01-30 | 2010-01-29 | Broadband silencer |
Country Status (7)
Country | Link |
---|---|
US (1) | US7934581B2 (en) |
EP (1) | EP2384401B1 (en) |
JP (1) | JP5738773B2 (en) |
KR (1) | KR20110113191A (en) |
CN (1) | CN102369359B (en) |
MX (1) | MX2011008117A (en) |
WO (1) | WO2010086719A1 (en) |
Families Citing this family (65)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4985876B2 (en) * | 2009-07-10 | 2012-07-25 | トヨタ自動車株式会社 | Refrigerant circulation circuit |
FR2950112B1 (en) * | 2009-09-11 | 2011-10-07 | Hutchinson | ACOUSTICAL ATTENUATION DEVICE FOR THE INTAKE LINE OF A THERMAL MOTOR, AND ADMISSION LINE INCORPORATING IT |
US8327975B2 (en) * | 2009-09-30 | 2012-12-11 | Ford Global Technologies, Llc | Acoustic silencer |
ES2549177T3 (en) * | 2009-10-16 | 2015-10-23 | Ti Automotive Engineering Centre (Heidelberg) Gmbh | Coolant circuit with acoustic damper for a tubular body that forms a cavity |
US8813708B2 (en) * | 2009-12-10 | 2014-08-26 | Mann+Hummel Gmbh | Air pillow flow guidance and acoustic countermeasure system for an air intake tract |
DE102009060081B4 (en) * | 2009-12-22 | 2018-02-22 | Airbus Operations Gmbh | Vacuum sewer system Silencers |
WO2012021361A2 (en) * | 2010-08-11 | 2012-02-16 | Borgwarner Inc. | Turbocharger |
DE102010037540A1 (en) * | 2010-09-15 | 2012-03-15 | Contitech Mgw Gmbh | Fluid line with resonator |
US8408357B2 (en) * | 2010-10-19 | 2013-04-02 | Jaguar Cars Limited | Air duct attenuator |
WO2012052548A2 (en) * | 2010-10-22 | 2012-04-26 | Umfotec Umformtechnik Gmbh | Wide-band damper for charge air lines of an internal combustion engine with turbocharger |
DE102010061994A1 (en) | 2010-11-25 | 2012-05-31 | Gardner Denver Deutschland Gmbh | Blower assembly |
GB2496368B (en) * | 2011-10-12 | 2017-05-31 | Ford Global Tech Llc | An acoustic attenuator for an engine booster |
DE102011120148A1 (en) * | 2011-12-03 | 2013-06-06 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Silencer with a resonator insertable in a circular path insert part |
DE102013207586A1 (en) * | 2012-05-03 | 2013-11-07 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | Air filter arrangement for e.g. internal combustion engine of vehicle, has inner skin, partition walls and inner surface cooperating with each other to define rear volume staying in fluidic connection with inner flow path by aperture |
CN103629025A (en) * | 2012-08-23 | 2014-03-12 | 曼胡默尔滤清器(上海)有限公司 | Comprehensive type silencer used for air filter |
EP2900948B1 (en) * | 2012-09-27 | 2018-03-07 | Eaton Corporation | Integral resonators for roots-type supercharger |
CN103711984B (en) * | 2012-09-28 | 2018-04-13 | 费希尔控制国际公司 | Simplified modal attenuator |
US9243543B2 (en) * | 2012-12-07 | 2016-01-26 | Hanon Systems | Universal attenuation device for air-conditioning circuit |
WO2014093215A1 (en) * | 2012-12-10 | 2014-06-19 | Eaton Corporation | Resonator with liner |
AT513955A1 (en) * | 2013-01-16 | 2014-08-15 | Henn Gmbh & Co Kg | Silencer and process for its production |
CN103256258A (en) * | 2013-05-10 | 2013-08-21 | 同济大学 | Silencer for fuel cell car air auxiliary system |
CN103277170A (en) * | 2013-05-21 | 2013-09-04 | 奇瑞汽车股份有限公司 | Throttle valve body |
CN103291386A (en) * | 2013-06-14 | 2013-09-11 | 湖南天雁机械有限责任公司 | Turbocharger silencer |
CN104343746A (en) * | 2013-07-24 | 2015-02-11 | 苏州宝时得电动工具有限公司 | Blowing-suction machine |
KR102085824B1 (en) * | 2013-10-15 | 2020-03-06 | 엘지전자 주식회사 | Air Conditioner |
US9175648B2 (en) * | 2013-10-17 | 2015-11-03 | Ford Global Technologies, Llc | Intake system having a silencer device |
CN104712470A (en) * | 2013-12-13 | 2015-06-17 | 北汽福田汽车股份有限公司 | Testing device for determining resonant cavity structure of air inlet pipe of air filter |
JP5896982B2 (en) * | 2013-12-26 | 2016-03-30 | 三菱重工業株式会社 | Silencer |
USD732081S1 (en) | 2014-01-24 | 2015-06-16 | Eaton Corporation | Supercharger |
US20150218984A1 (en) * | 2014-02-06 | 2015-08-06 | Gary Hash | Motorcycle muffler baffle |
US9309843B2 (en) * | 2014-02-13 | 2016-04-12 | Ls Mtron Ltd. | Resonator for vehicle |
WO2015179444A1 (en) * | 2014-05-19 | 2015-11-26 | Eaton Corporation | Supercharger outlet resonator |
DE102014108132A1 (en) * | 2014-06-10 | 2015-12-17 | Elringklinger Ag | Silencer and internal combustion engine |
DE202014007986U1 (en) * | 2014-10-01 | 2016-01-05 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | silencer |
WO2016057186A1 (en) * | 2014-10-08 | 2016-04-14 | Dresser-Rand Company | Concentric resonators for machines |
DE102014115898B4 (en) * | 2014-10-31 | 2019-07-25 | Dietrich Denker | resonator |
CN104612864A (en) * | 2014-11-04 | 2015-05-13 | 上海永红汽车零部件有限公司 | Car and air inlet system of car |
US9664155B2 (en) * | 2014-12-03 | 2017-05-30 | Mann+Hummel Gmbh | Air induction system having an acoustic resonator |
DE102015000418A1 (en) | 2015-01-14 | 2016-07-14 | Hydac Technology Gmbh | damping device |
DE102015202851A1 (en) * | 2015-02-17 | 2016-08-18 | Röchling Automotive SE & Co. KG | Fluid conduit means |
US9376946B1 (en) * | 2015-04-02 | 2016-06-28 | Fisher Controls International Llc | Modal attenuator |
FR3036731B1 (en) * | 2015-05-29 | 2017-05-19 | Novares France | DEVICE FOR ATTENUATING MOUTH NOISES AND RADIANT NOISE |
KR102355002B1 (en) | 2015-06-04 | 2022-01-25 | 쿠퍼스탠다드오토모티브앤인더스트리얼 주식회사 | Resonator for vehicle |
US20180171865A1 (en) * | 2015-06-11 | 2018-06-21 | Eaton Corporation | Supercharger integral resonator |
DE102015214709A1 (en) | 2015-07-31 | 2017-02-02 | Mahle International Gmbh | Flow channel and ventilation, heating or air conditioning |
DE102015112717B4 (en) * | 2015-08-03 | 2021-01-14 | Dietrich Denker | Device for lowering flow noise |
KR102522668B1 (en) * | 2015-09-02 | 2023-04-18 | 쿠퍼스탠다드오토모티브앤인더스트리얼 주식회사 | Silencer for Vehicle |
JP6629627B2 (en) * | 2016-02-22 | 2020-01-15 | 三菱重工業株式会社 | Noise reduction structure and supercharging device |
USD855657S1 (en) | 2016-03-21 | 2019-08-06 | Eaton Corporation | Front cover for supercharger |
KR101876070B1 (en) * | 2016-10-26 | 2018-07-06 | 현대자동차주식회사 | Air duct for vehicle having function of reducing intake noise |
US10302052B2 (en) * | 2016-11-16 | 2019-05-28 | Ford Global Technologies, Llc | Vacuum actuated multi-frequency quarter-wave resonator for an internal combustion engine |
US10221963B2 (en) * | 2017-02-28 | 2019-03-05 | Fisher Controls International Llc | Ball valve with modal silencer |
JP6809321B2 (en) * | 2017-03-21 | 2021-01-06 | 株式会社デンソー | Air conditioner |
DE102017130661A1 (en) * | 2017-12-20 | 2019-06-27 | Montaplast Gmbh | Broadband damper for a motor vehicle engine |
US11319847B2 (en) | 2018-09-19 | 2022-05-03 | Tenneco Automotive Operating Company Inc. | Exhaust device with noise suppression system |
KR102119547B1 (en) * | 2018-11-05 | 2020-06-09 | 주식회사 화승알앤에이 | Resonator |
US10539066B1 (en) * | 2018-11-21 | 2020-01-21 | GM Global Technology Operations LLC | Vehicle charge air cooler with an integrated resonator |
CN109708393A (en) * | 2018-12-06 | 2019-05-03 | 青岛海尔股份有限公司 | Silencing means and refrigerator with it |
WO2020154295A1 (en) | 2019-01-21 | 2020-07-30 | Toledo Molding & Die, Inc. | Inline high frequency fiber silencer |
EP3738494A1 (en) * | 2019-05-14 | 2020-11-18 | Koninklijke Philips N.V. | Noise reduction device |
DE102020104034A1 (en) * | 2020-02-17 | 2021-08-19 | Mann+Hummel Gmbh | Acoustic component and air duct with an acoustic component |
US11662048B2 (en) * | 2020-03-30 | 2023-05-30 | Toyota Motor Engineering & Manufacturing North America, Inc. | Compact duct sound absorber |
CN114483644B (en) * | 2020-11-12 | 2024-03-26 | 佛山市顺德区美的洗涤电器制造有限公司 | Centrifugal impeller, centrifugal fan and fume absorbing equipment |
US11946398B1 (en) * | 2022-10-12 | 2024-04-02 | Mann+Hummel Gmbh | Broadband resonator with an entrained water removal system for a fuel cell compressor |
WO2024158407A1 (en) * | 2023-01-24 | 2024-08-02 | Rowan University | Mitigation of malicious sonic attacks on voice-based computing devices |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943246A1 (en) * | 1999-09-10 | 2001-03-22 | Daimler Chrysler Ag | Silencer to reduce air noise in induction manifold, with resonator casing of circular cross section fitted round charge air tube |
WO2002057616A1 (en) * | 2001-01-18 | 2002-07-25 | Mahle Filtersysteme Gmbh | Silencer with a plurality of resonance chambers |
US20080173271A1 (en) * | 2007-01-23 | 2008-07-24 | Gm Global Technology Operations, Inc. | Adjustable helmholtz resonator |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2332543A (en) * | 1932-09-15 | 1943-10-26 | Gen Motors Corp | Internal combustion engine exhaust system |
SE409484B (en) * | 1976-08-19 | 1979-08-20 | Collin Lars | Muffler |
DE4219249C2 (en) | 1992-06-12 | 1994-03-31 | Kuehnle Kopp Kausch Ag | Radial compressor, especially a turbocharger |
DE4327562A1 (en) | 1993-08-17 | 1995-02-23 | Erwin Dipl Ing Koetter | Coaxial resonator silencer for high alternating pressures |
DE19615917A1 (en) | 1996-04-22 | 1997-10-30 | Wolf Woco & Co Franz J | Intake silencer and motor vehicle |
US5839405A (en) | 1997-06-27 | 1998-11-24 | Chrysler Corporation | Single/multi-chamber perforated tube resonator for engine induction system |
DE19747158A1 (en) | 1997-10-24 | 1999-04-29 | Wolf Woco & Co Franz J | Pulsation damper |
US6659222B1 (en) * | 1999-03-05 | 2003-12-09 | Arvinmeritor, Inc. | Multi-chambered muffler |
DE19956165A1 (en) | 1999-11-23 | 2001-05-31 | Umfotec Umformtechnik Gmbh | Sound dampener consists of a pipe with outer casing and inner pipes, intermediate walls, and slits |
ES2300357T5 (en) | 2001-06-13 | 2011-11-17 | Woco Industrietechnik Gmbh | NOISE SHOCK ABSORBER. |
EP1291570A3 (en) * | 2001-09-07 | 2004-06-30 | Avon Polymer Products Limited | Noise and vibration suppressors |
US6752240B1 (en) * | 2002-11-05 | 2004-06-22 | Brunswick Corporation | Sound attenuator for a supercharged marine propulsion device |
DE10341319B4 (en) * | 2003-09-08 | 2006-02-02 | Veritas Ag | silencer |
US20050150718A1 (en) * | 2004-01-09 | 2005-07-14 | Knight Jessie A. | Resonator with retention ribs |
WO2005111390A1 (en) * | 2004-05-11 | 2005-11-24 | Modine Manufacturing Company | Integrated heat exchanger and muffler unit |
DE102004038216A1 (en) * | 2004-08-05 | 2006-03-16 | Mann+Hummel Gmbh | intake silencer |
US7367424B2 (en) * | 2005-02-14 | 2008-05-06 | Honeywell International, Inc. | Eccentric exhaust muffler for use with auxiliary power units |
-
2009
- 2009-01-30 US US12/363,088 patent/US7934581B2/en not_active Expired - Fee Related
-
2010
- 2010-01-29 WO PCT/IB2010/000162 patent/WO2010086719A1/en active Application Filing
- 2010-01-29 JP JP2011546990A patent/JP5738773B2/en not_active Expired - Fee Related
- 2010-01-29 EP EP10711931.5A patent/EP2384401B1/en active Active
- 2010-01-29 CN CN201080015585.4A patent/CN102369359B/en not_active Expired - Fee Related
- 2010-01-29 MX MX2011008117A patent/MX2011008117A/en not_active Application Discontinuation
- 2010-01-29 KR KR1020117019852A patent/KR20110113191A/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943246A1 (en) * | 1999-09-10 | 2001-03-22 | Daimler Chrysler Ag | Silencer to reduce air noise in induction manifold, with resonator casing of circular cross section fitted round charge air tube |
WO2002057616A1 (en) * | 2001-01-18 | 2002-07-25 | Mahle Filtersysteme Gmbh | Silencer with a plurality of resonance chambers |
US20080173271A1 (en) * | 2007-01-23 | 2008-07-24 | Gm Global Technology Operations, Inc. | Adjustable helmholtz resonator |
Also Published As
Publication number | Publication date |
---|---|
EP2384401A1 (en) | 2011-11-09 |
JP2012517549A (en) | 2012-08-02 |
MX2011008117A (en) | 2011-10-17 |
KR20110113191A (en) | 2011-10-14 |
JP5738773B2 (en) | 2015-06-24 |
CN102369359A (en) | 2012-03-07 |
US20100193282A1 (en) | 2010-08-05 |
US7934581B2 (en) | 2011-05-03 |
CN102369359B (en) | 2016-11-09 |
WO2010086719A1 (en) | 2010-08-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2384401B1 (en) | Broadband silencer | |
EP0859906B2 (en) | A noise attenuator for an induction system or an exhaust system | |
WO2020028838A1 (en) | Air-transparent selective sound silencer using ultra-open metamaterial | |
RU2679062C2 (en) | Intake system silencer (options) | |
KR101598681B1 (en) | Resonator for vehicle | |
WO2011044344A2 (en) | Low-noise ported-shroud compressor for a turbocharger | |
KR101853601B1 (en) | Noise reduction structure and supercharging device | |
JP2008514866A (en) | Compressor noise suppression | |
US7870930B2 (en) | Exhaust system with external helmholtz resonator and associated method | |
CN105370343A (en) | Silencer | |
US7735604B2 (en) | Silencer of exhaust gases, in particular for motor vehicles | |
US11536501B2 (en) | Oil separator with integrated muffler | |
KR20150095435A (en) | Resonator for vehicle | |
WO2014102747A1 (en) | A broadband silencer | |
TW202409424A (en) | Muffler and refrigeration system having same | |
WO2015054558A1 (en) | Quadruple-tuned silencer apparatus and method for attenuating sound from an engine exhaust | |
KR100835709B1 (en) | Exhaust silencer for engine exhaust system | |
CN109477407A (en) | Tone color scales exhaust system | |
CN115419529B (en) | Muffler assembly and noise verification method | |
US11639676B2 (en) | Vehicle exhaust system | |
KR101692579B1 (en) | Muffler for Vehicle with Multi Path | |
CN118293070A (en) | Pump body assembly for compressor and compressor | |
RU2333369C2 (en) | Internal combustion engine silencer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20110729 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: KIM, GEON-SEOK Inventor name: GLOVER, RODNEY, C. |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20150320 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20181203 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602010058893 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20190515 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190815 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190915 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190816 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190815 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1133768 Country of ref document: AT Kind code of ref document: T Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602010058893 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
26N | No opposition filed |
Effective date: 20200218 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602010058893 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20200129 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20200131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200131 Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200129 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200801 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200129 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200131 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200131 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200129 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190515 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20190915 |